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#include "completionsettingspage.h"
#include "ui_completionsettingspage.h"
#include "cpptoolsconstants.h"

#include <coreplugin/icore.h>
#include <extensionsystem/pluginmanager.h>
#include <texteditor/texteditorsettings.h>

#include <QTextStream>
#include <QCoreApplication>

using namespace CppTools;
using namespace CppTools::Internal;
using namespace CppTools::Constants;

CompletionSettingsPage::CompletionSettingsPage(QObject *parent)
    : TextEditor::TextEditorOptionsPage(parent)
    , m_page(0)
{
    m_commentsSettings.fromSettings(QLatin1String(CPPTOOLS_SETTINGSGROUP), Core::ICore::settings());

    setId(QLatin1String("P.Completion"));
    setDisplayName(tr("Completion"));
}

CompletionSettingsPage::~CompletionSettingsPage()
{
    delete m_page;
}

QWidget *CompletionSettingsPage::createPage(QWidget *parent)
{
    QWidget *w = new QWidget(parent);
    m_page = new Ui::CompletionSettingsPage;
    m_page->setupUi(w);

    const TextEditor::CompletionSettings &settings =
            TextEditor::TextEditorSettings::instance()->completionSettings();

    int caseSensitivityIndex = 0;
    switch (settings.m_caseSensitivity) {
    case TextEditor::CaseSensitive:
        caseSensitivityIndex = 0;
        break;
    case TextEditor::CaseInsensitive:
        caseSensitivityIndex = 1;
        break;
    case TextEditor::FirstLetterCaseSensitive:
        caseSensitivityIndex = 2;
        break;
    }

    int completionTriggerIndex = 0;
    switch (settings.m_completionTrigger) {
    case TextEditor::ManualCompletion:
        completionTriggerIndex = 0;
        break;
    case TextEditor::TriggeredCompletion:
        completionTriggerIndex = 1;
        break;
    case TextEditor::AutomaticCompletion:
        completionTriggerIndex = 2;
        break;
    }

    m_page->caseSensitivity->setCurrentIndex(caseSensitivityIndex);
    m_page->completionTrigger->setCurrentIndex(completionTriggerIndex);
    m_page->autoInsertBrackets->setChecked(settings.m_autoInsertBrackets);
    m_page->surroundSelectedText->setChecked(settings.m_surroundingAutoBrackets);
    m_page->partiallyComplete->setChecked(settings.m_partiallyComplete);
    m_page->spaceAfterFunctionName->setChecked(settings.m_spaceAfterFunctionName);
    m_page->enableDoxygenCheckBox->setChecked(m_commentsSettings.m_enableDoxygen);
    m_page->generateBriefCheckBox->setChecked(m_commentsSettings.m_generateBrief);
    m_page->leadingAsterisksCheckBox->setChecked(m_commentsSettings.m_leadingAsterisks);

    if (m_searchKeywords.isEmpty()) {
        QTextStream(&m_searchKeywords) << m_page->caseSensitivityLabel->text()
                << ' ' << m_page->autoInsertBrackets->text()
                << ' ' << m_page->surroundSelectedText->text()
                << ' ' << m_page->completionTriggerLabel->text()
                << ' ' << m_page->partiallyComplete->text()
                << ' ' << m_page->spaceAfterFunctionName->text()
                << ' ' << m_page->enableDoxygenCheckBox->text()
                << ' ' << m_page->generateBriefCheckBox->text()
                << ' ' << m_page->leadingAsterisksCheckBox->text();
        m_searchKeywords.remove(QLatin1Char('&'));
    }

    m_page->generateBriefCheckBox->setEnabled(m_page->enableDoxygenCheckBox->isChecked());

    return w;
}

void CompletionSettingsPage::apply()
{
    if (!m_page) // page was never shown
        return;
    TextEditor::CompletionSettings settings;
    settings.m_caseSensitivity = caseSensitivity();
    settings.m_completionTrigger = completionTrigger();
    settings.m_autoInsertBrackets = m_page->autoInsertBrackets->isChecked();
    settings.m_surroundingAutoBrackets = m_page->surroundSelectedText->isChecked();
    settings.m_partiallyComplete = m_page->partiallyComplete->isChecked();
    settings.m_spaceAfterFunctionName = m_page->spaceAfterFunctionName->isChecked();

    TextEditor::TextEditorSettings::instance()->setCompletionSettings(settings);

    if (!requireCommentsSettingsUpdate())
        return;

    m_commentsSettings.m_enableDoxygen = m_page->enableDoxygenCheckBox->isChecked();
    m_commentsSettings.m_generateBrief = m_page->generateBriefCheckBox->isChecked();
    m_commentsSettings.m_leadingAsterisks = m_page->leadingAsterisksCheckBox->isChecked();
    m_commentsSettings.toSettings(QLatin1String(CPPTOOLS_SETTINGSGROUP), Core::ICore::settings());

    emit commentsSettingsChanged(m_commentsSettings);
}

bool CompletionSettingsPage::matches(const QString &s) const
{
    return m_searchKeywords.contains(s, Qt::CaseInsensitive);
}

TextEditor::CaseSensitivity CompletionSettingsPage::caseSensitivity() const
{
    switch (m_page->caseSensitivity->currentIndex()) {
    case 0: // Full
        return TextEditor::CaseSensitive;
    case 1: // None
        return TextEditor::CaseInsensitive;
    default: // First letter
        return TextEditor::FirstLetterCaseSensitive;
    }
}

TextEditor::CompletionTrigger CompletionSettingsPage::completionTrigger() const
{
    switch (m_page->completionTrigger->currentIndex()) {
    case 0:
        return TextEditor::ManualCompletion;
    case 1:
        return TextEditor::TriggeredCompletion;
    default:
        return TextEditor::AutomaticCompletion;
    }
}

void CompletionSettingsPage::finish()
{
    if (!m_page) // page was never shown
        return;
    delete m_page;
    m_page = 0;
}

const CommentsSettings &CompletionSettingsPage::commentsSettings() const
{
    return m_commentsSettings;
}

bool CompletionSettingsPage::requireCommentsSettingsUpdate() const
{
    return m_commentsSettings.m_enableDoxygen != m_page->enableDoxygenCheckBox->isChecked()
        || m_commentsSettings.m_generateBrief != m_page->generateBriefCheckBox->isChecked()
        || m_commentsSettings.m_leadingAsterisks != m_page->leadingAsterisksCheckBox->isChecked();
}
